20's or not?

[PUZZ]

I'm really torn on whether to get the 20 inch wheels when I do order my X5 4.8. I love the look but I have two concerns.

1. Snow performance and the additional expense of having either 20 inch snow tires (not sure if they make them) or having a dedicated set of snow wheels/tires.

2. I'm a little concerned that the 20's on this car may just send the wrong "in your face!" bling message. They almost look too good if that makes any sense. I'm going to catch enough sh-t from the guys at work for just getting a BMW let alone one of the most aggressive looking ones they make this side of the M5 (with the 20's).